Hello all. I am trying to build a Geiger Counter circuit. I am using the schematic and instructions from the book "Electronic Sensors for the Evil Genius". I have followed the directions exactly, yet can't get my voltage up to 500. The most I can get is 240v.
This circuit uses a 4049 Hex Inverter to generate a square wave. This square wave switches current on and off to a Mosfet IRF830, which in turn switches current to the transformer.
I am not sure what the problem is. I double checked everything and it seems my circuit matches the schematic. I am wondering if I chose the wrong transformer even though I follow the specs in the book. (the book just says to use a 8 to 1200 ohm audio interstage transformer) The transformer I used has 810 primary windings and 80 secondary windings. I tapped it halfway through the secondary windings to essentially give me an 810/40 ratio. I then ran the transformer through the secondary windings up the voltage into the primary. I am only getting 240 volts out the primary.
Any suggestions? Do you think my problem is in the transformer? Do you know what else could cause the lack of voltage? Thanks in advance. I am new to this electronics stuff so please go easy on me.
The transformer I am using...
http://www.mouser.com/ProductDetail...=sGAEpiMZZMv0IfuNuy2LUd1oaj1xuSl7ovuhlClV6Fw=
The schematic for the Geiger Counter...
http://www.freeinfosociety.com/electronics/schemview.php?id=2064
This circuit uses a 4049 Hex Inverter to generate a square wave. This square wave switches current on and off to a Mosfet IRF830, which in turn switches current to the transformer.
I am not sure what the problem is. I double checked everything and it seems my circuit matches the schematic. I am wondering if I chose the wrong transformer even though I follow the specs in the book. (the book just says to use a 8 to 1200 ohm audio interstage transformer) The transformer I used has 810 primary windings and 80 secondary windings. I tapped it halfway through the secondary windings to essentially give me an 810/40 ratio. I then ran the transformer through the secondary windings up the voltage into the primary. I am only getting 240 volts out the primary.
Any suggestions? Do you think my problem is in the transformer? Do you know what else could cause the lack of voltage? Thanks in advance. I am new to this electronics stuff so please go easy on me.
The transformer I am using...
http://www.mouser.com/ProductDetail...=sGAEpiMZZMv0IfuNuy2LUd1oaj1xuSl7ovuhlClV6Fw=
The schematic for the Geiger Counter...
http://www.freeinfosociety.com/electronics/schemview.php?id=2064